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Finding the Fourth Proportional to 889.28, 1,333.91 and 402.22

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Solution

The fourth proportional to 889.28, 1,333.91 and 402.22 is: 603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.28 : 1,333.91 = 402.22 : x
  2. Step 2: Convert to fraction form
    889.28/1,333.91 = 402.22/x
  3. Step 3: Cross multiply
    889.28x = 1,333.91 × 402.22
  4. Step 4: Simplify right side
    889.28x = 536,522.95
  5. Step 5: Solve for x
    x = 536,522.95/889.28
  6. Step 6: Final answer
    x = 603.33

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.